2220401402 has 4 divisors (see below), whose sum is σ = 3330602106. Its totient is φ = 1110200700.

The previous prime is 2220401387. The next prime is 2220401419. The reversal of 2220401402 is 2041040222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2193142561 + 27258841 = 46831^2 + 5221^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555100349 + ... + 555100352.

Almost surely, 2^2220401402 is an apocalyptic number.

2220401402 is a deficient number, since it is larger than the sum of its proper divisors (1110200704).

2220401402 is a wasteful number, since it uses less digits than its factorization.

2220401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110200703.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2220401402 is about 47121.1354065243. The cubic root of 2220401402 is about 1304.5993694921.

Adding to 2220401402 its reverse (2041040222), we get a palindrome (4261441624).

The spelling of 2220401402 in words is "two billion, two hundred twenty million, four hundred one thousand, four hundred two".